I paid the full price and I am not irked
.
I've been using it extensively since it was released (and moaning at Altium to get behind it). The lifetime support, maintenance and upgrades seem like a pretty fair reward for being an early adopter.
I'm glad to see the product moving forward again and at <$1000 it is an absolute steal.
I was offered an upgrade to Altium Designer and I've used AD professionally when I'm on contract but to be honest I prefer the UI of Circuit Studio, I do not need the higher-end features of AD (and I can work around most limitations
) and even at the previous prices the initial cost of AD and the ongoing/maintenance costs were just far more than I was willing to pay for my own use.
Oh, BTW I've got Proteus Level 3 with Advanced Simulation too and I shall probably be keeping that current to support legacy projects. Of the two I would say that Circuit Studio is more capable but Proteus is by no means bad and, specifically, the options for simulation in Proteus are way better. The reporting and diagnostics of Circuit Studio are superior and when managing complex track widths, pad-stacks, different clearances for different power rails and such the 'rules' based approach of CS/Altium is much easier to manage and control. As usual though with great power comes great complexity and I would say it is easier to screw up in CS. Oh, push routing is very nice too... but that has been promised soon in Proteus... although obviously it's already present and functional in CS.